Frankie Valli to Guest on New Season of HAWAII FIVE-O

The Four Seasons singer will portray Leonard Campbell, the new love interest for McGarrett's Aunt Deb, played by the legendary Carol Burnett. Showrunner Peter Lenkov told the site, "They're going to have this whirlwind romance, and they're coming to Hawaii to get Married because they realize both of them don't have much time left."

According to the report, Aunt Deb may be putting the cart before the horse when it comes to wedding plans due to her nephew's suspicions about Leonard's past.

The episode is scheduled to air on November 21st. The fifth season of the drama series kicks of on Friday, Sept. 26 at 9/8c on CBS.

About the show:

Hawaii Five-0 is a contemporary take on the classic series about a new elite federalized task force whose mission is to wipe out the crime that washes up on the Islands' sun-drenched beaches. Detective Steve McGarrett, a decorated Naval officer-turned-cop, returned to Oahu to investigate his father's murder and stayed after Hawaii's former governor persuaded him to head up the new team: his rules, no red tape and full blanket authority to hunt down the biggest "game" in town. Joining McGarrett is Detective Danny "Danno" Williams, a relocated ex-New Jersey cop - a working man in paradise who prefers skyscrapers to the coastline - but who's committed to keeping the Islands safe for his young daughter; Chin Ho Kelly, an ex-Honolulu police detective, and former protégé of McGarrett's father, who was wrongly accused of corruption; Dr. Max Bergman, the quirky coroner; Chin's cousin, Kono Kalakaua, a beautiful and fearless native, eager to establish herself among the department's elite; and Captain Lou Grover, who formerly headed Hawaii's SWAT unit. Joining them is Jerry Ortega, a former classmate of Chin's and the Island's local conspiracy theorist. While McGarrett continues to try to bring closure to his father's case and closure to his mother's past, the state's brash FIVE-0 unit, who may spar and jest among themselves, remain determined to eliminate the seedy elements from the 50th state.